The variation begins with: 23. Ra8 Rxb7 24. Rda1 ,
which sets up connected white rooks on the A-file on A1 and A8.
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[Event “World Cup 2017”]
[Site “Tbilisi”]
[Date “2017.09.06”]
[Round “9.10”]
[White “Anand Viswanathan (IND)”]
[Black “Kovalyov Anton (CAN)”]
[Result “0-1”]
[ECO “B90”]
[WhiteElo “2794”]
[BlackElo “2649”]
[Annotator “,david250DavidBernier”]
[PlyCount “86”]
[EventDate “2017.??.??”]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6
6. h3 e5 7. Nb3 Be6 8. Be3 h5 9. Be2 Nbd7 10. O-O Rc8
11. Qd2 b5 12. Rfd1 Nb6 13. Bxb6 Qxb6 14. a4 b4 15.Nd5 Nxd5
16. exd5 Bd7 17. a5 Qb7 18. Qe3 Be7 19. Qb6 Qxb6 20. axb6 Rb8
21. Rxa6 Bd8 22. b7 Ke7
23. Nc5
VARIATION 23.Ra8 =
(23. Ra8 Rxb7 24. Rda1 Rf8 25. R1a7 Rc7
26.Nd2 f5 27. Nf3 g6 28. Ng5 Rxa7 29. Rxa7
30. h4 e4 31. Rb7 Bxg5 32. hxg5 Kd8
33. Kf1 b3 34. Rxb3 Kc7 35. Ra3 Kb6 36. f4 exf3
37. Bxf3 f4 38. Kf2 Rf5
39.Rb3+ Kc7 40. Rc3+ Kb7 41. Rc4 Rxg5 42. Rxf4 Rf5
43. Ke3 g5 44. Rxf5 Bxf5 45. c3 h4 46. b4 Ka7 47. Be4 h3
48. gxh3 Bxh3 49. c4 Kb6 50. Bd3 Kc7 51. Bg6 Kc8
52.c5 Bg4 53. Bb1 Kd8 54. Kd4 Kc7 55. b5 Bd7
56. b6+ Kb7 57. Be4 Ka6 58. c6 Bg4
59. b7 Ka7 60. Kc3 Be2 61. Bf5 Ba6 62. Bc8 g4
63. b8=Q+ Kxb8 64. Bxa6 Kc7
65.Kd4 Kb6 66. Bc8 g3 67. Bh3 g2 68. Bxg2 Kc7 69. Ke4 Kd8 70. Bh3 Kc7
71. Kf5 Kd8 72. Ke6 Kc7 73. Bf1 Kd8 74. Kxd6 Ke8
75. c7 Kf8 76. c8=Q+ Kg7 77. Ke7 Kg6
78. Qg4+ Kh7 79. Kf6 Kh8 80. Qg7#)
Variation 23. Ra8 Done…
conntinuing actual game:
23… dxc5 24. d6+ Kf6 25. Bf3 Kf5 26. Bd5 e4
27. Re1 Bf6 28. Bxe4+ Kg5 29. Ra5 Bxb2 30. Rxc5+ Kf6 31. Re3 g6 32. Rf3+ Ke6
33. Rd3 Rhd8 34. Ra5 f5 35. Bf3 Bc3 36. h4 Kf6 37. g3 f4 38. Be4 Bf5 39. Bxf5
gxf5 40. Rb5 Ke6 41. Kf1 Rd7 42. gxf4 Rbxb7 43. Re3+ Kf6 0-1
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